High‐Performance Blue/Ultraviolet‐Light‐Sensitive ZnSe‐Nanobelt Photodetectors

Fang, Xiaosheng; Xiong, Shenglin; Zhai, Tianyou; Bando, Yoshio; Liao, Meiyong; Gautam, Ujjal K.; Koide, Yasuo; Zhang, Xiaogang; Qian, Yitai; Golberg, Dmitri

doi:10.1002/adma.200902126

Cited by 225 publications

(165 citation statements)

References 40 publications

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“…Results and Discussion Figure 1 shows the XRD pattern of the product obtained by the reaction of zinc oleate (ZnA C H T U N G T R E N N U N G (OAc) 2 ) and Se in oleylamine at 240 8C. All the peaks in the XRD pattern are in good agreement with those of zincblende phase ZnSe (JCPDS Card, No.37-1463).…”

Section: Introductionsupporting

confidence: 60%

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Chemical Synthesis, Structural Characterization, Optical Properties, and Photocatalytic Activity of Ultrathin ZnSe Nanorods

Yao

Zhao

Qiao

et al. 2011

Chemistry A European J

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Ultrathin ZnSe nanorods in the cubic phase have been synthesized by the reaction of selenium and zinc oleate for 30 min at 240 °C. These nanorods showed an average diameter of 2.4 nm, which is much smaller than the Bohr size of bulk ZnSe. Thus, they exhibited a remarkable quantum size effect in terms of their optical properties. The formation of the ultrathin nanorods could be attributed to the oriented attachment mechanism, which was supported by the structure of the nanorods and the control experiments. The ultrathin nanorods were transferred into an aqueous solution by ligand exchange. The performance of these nanorods as a catalyst was examined, using the photodegradation of methyl orange as a model reaction. It was found that the ultrathin nanorods possessed better photocatalytic activities than conventional ones.

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Section: Introductionsupporting

confidence: 60%

“…[1][2][3] Thus, great efforts have been devoted to the synthesis and control of ZnSe nanocrystals in terms of their shape, size, and phase. One of these elaborate control methods is the synthesis of one-dimensional ZnSe nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Chemical Synthesis, Structural Characterization, Optical Properties, and Photocatalytic Activity of Ultrathin ZnSe Nanorods

Yao

Zhao

Qiao

et al. 2011

Chemistry A European J

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“…Remarkably, the calculated R l and EQE for the present nanowires are as high as $482 A W À1 and $132800%, respectively, for the incident wavelength of 450 nm at 1.0 V, which are much higher than those values of other semiconductor detectors ($0.12 A W À1 and 50% for ZnS nanobelts, $0.12 A W À1 and 37.2% for ZnSe nanobelts). [42,43] These results imply that the centimeter-long V 2 O 5 nanowires can be utilized as highly sensitive photodetectors. The electronic properties of the devices at different temperatures ranging from 280 to 100 K in vacuum were also studied.…”

mentioning

confidence: 94%

Centimeter‐Long V₂O₅ Nanowires: From Synthesis to Field‐Emission, Electrochemical, Electrical Transport, and Photoconductive Properties

Zhai¹,

Liu²,

Li³

et al. 2010

Advanced Materials

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378

232

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One-dimensional nanostructures have attracted considerable attention due to their importance in basic scientific research and potential technologic applications. [1][2][3][4] Among them, vanadium pentoxide (V 2 O 5 ) nanowires have been extensively studied in recent years because of their prospective applications in chemical sensors, field-emitters, catalysts, lithium-ion batteries, actuators, and electrochromic or other nanodevices. [5][6][7] Several different approaches have been explored for the synthesis of V 2 O 5 nanowires, such as thermal evaporation methods, [8,9] hydrothermal/solvothermal syntheses, [5,10,11] sol-gel techniques, [12] and electrodeposition. [13] However, the nanowires synthesized by these methods have typical lengths in the micrometer range (most of them are shorter than 10 mm); moreover, if one can make centimeter-long V 2 O 5 nanowires, which should be much more useful compared to short wires for some specific purposes, such as field-emission (FE), device interconnects, and reinforcing fibers in composites. [14][15][16][17] Herein, we fabricated high-quality single-crystalline centimeter-long V 2 O 5 nanowires ($80-120 nm in diameter, several centimeters in length; aspect ratio >10 5 -10 6 ) using an environmental friendly hydrothermal approach without dangerous reagents, harmful solvents, and surfactants. The FE, electrochemical and electrical transport, and photoconductive properties of the synthesized V 2 O 5 nanowires were then investigated in detail. Our results suggest a high potential of utilizing these novel nanowires in field-emitters, lithium-ion batteries, interconnects, and optoelectronic devices.The representative morphologies of the V 2 O 5 nanowires were investigated by FE scanning electron microscopy (SEM), as shown in Figure 1a. Other SEM images (see the Supporting Information, Fig. S1) also confirm the high-yield fabrication of smooth and straight nanowires of $80-120 nm in diameter. Large portions of the nanowires are usually several millimeters or even up to several centimeters in length (inset of Fig. 1a), resulting in an aspect ratio of $10 5 -10 6. To the best of our knowledge, this is the first time that such ultra-long V 2 O 5 nanowires have been obtained. An X-ray diffraction (XRD) pattern of the sample is shown in Figure 1b Figure S2 (Supplementary Information) depicts a room temperature micro-Raman spectrum of the ultralong V 2 O 5 nanowires. The peaks, located at 145, 197, 285, 305, 407, 480, 525, 694, and 990 cm À1 , can be assigned to the Raman signature of V 2 O 5 . [18,19] A predominant low-wavelength peak at 145 cm À1 is attributed to the skeleton bent vibration (B 3g mode), while the peaks at 197 and 285 cm À1 derive from the bending vibrations of O C ÀVÀO B bond (A g and B 2g modes). The bending vibration of VÀO C (A g mode), the bending vibration of VÀO B ÀV bond (A g mode), the stretching vibration of VÀO B ÀV bond (A g mode), and the stretching vibration of VÀO C bond (B 2g mode) are regarded at about 305, 407, 525, and 694 cm À1 , respectively. Th...

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“…Table 1 summarizes the performances of current blue-light photodetectors and other devices based on ZnSe nanostructures. It is easy to note that, after decoration with InNPs, both G and R are not only higher than that of the SLG/ ZnSeNR device, but also higher than that of other ZnSe nanostructure-based photodetectors, including ZnSe nanobelts [ 31 ] and ZnSe nanowires. [ 32 ] As will be discussed later, the relatively high performance of our InNP@SLG/ZnSeNR device is due to the contribution from the plasmonic InNPs that can induce direct electron injection from InNPs to SLG under 460 nm light illumination.…”

Section: Full Paper Full Paper Full Papermentioning

confidence: 96%

Plasmonic Indium Nanoparticle‐Induced High‐Performance Photoswitch for Blue Light Detection

Yuan

Zou

et al. 2015

Advanced Optical Materials

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in various optoelectronic devices and systems including solar cells, [ 8,9 ] lightemitting diodes (LEDs), [ 10,11 ] nanophotonic switches, [12][13][14] nanoantennas, [ 15,16 ] water splitters, [ 17,18 ] photocatalysts, [ 19 ] optical waveguides, [ 20 ] and nanolasers. [ 21 ] Although LSPR is widely observed in noble metal nanoparticles (NMNs) due to the high density of electrons, it is not limited to NMNs and can also be achieved in some poor metal nanoparticles (PMNs) including indium, tin, copper, and even aluminium with a high density of free electrons. In comparison to noble nanoparticles, the PMNs are advantageous in the following two respects: plasmonic materials made of PMNs are much cheaper to synthesize due to their natural abundance in the Earth, which make them highly competitive building blocks for various applications, and, unlikeNMNs with their tunable LSPR normally in the visible and infrared regions (AuNPs: ≈520 nm; Au nanorods: 900 nm; AgNPs: ≈460 nm), the plasmonic properties of PMNs can be readily extended across a broader electromagnetic spectrum (AlNPs: 200-250 nm, InNPs: 300-700 nm, CuNPs: 600-900 nm). In spite of the apparent advantages of plasmonic PMNs, there is a scarcity of studies about the utilization of plasmonic PMNs for various device applications, which has been successfully achieved by plasmonic NMNs. Here in this contribution, we present a novel 1D semiconductor nanostructure-based photo detector, which may fi nd potential application in military surveillance, target detection, and light vision. [ 22,23 ] The device was composed of a highly aligned hexagonal plasmonic InNP-modifi ed ZnSe nanoribbon (ZnSeNR)/single layer graphene (SLG) Schottky junction. Indium nanoparticles were chosen not only because they display an obvious LSPR effect like other noble metal nanoparticles (Au, Ag, and Pt), but also the LSPR band of In nanoparticles is nearly identical to the bandgap of ZnSeNR. Theoretical simulations and device analysis reveal that the InNP array can induce LSPRs which are capable of trapping incident light effi ciently and enhancing the electric fi eld near the semiconductor nanostructures, leading to enhanced photo currents and an increase of key device parameters including responsivity and detectivity. This result suggests that plasmonic PMNs are highly competitive alternatives to boost the device performance of optoelectronic systems.Plasmonic nanostructures composed of poor metals (e.g., In, Cu, Al) have lately received increasing interest due to their low cost and natural abundance relative to noble metal nanoparticles (e.g., Au, Ag, Pt). To date, while considerable progress has been achieved with regard to the utilization of plasmonic noble metal nanostructures for optimizing various optoelectronic devices, little work has been performed to study the device appplication of poor metals. In this study, a high-performance blue light nano-photodetector is induced through the use of a highly ordered indium nanoparticle (InNP) array. Electrical analysis reveals that, after de...

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High‐Performance Blue/Ultraviolet‐Light‐Sensitive ZnSe‐Nanobelt Photodetectors

Cited by 225 publications

References 40 publications

Chemical Synthesis, Structural Characterization, Optical Properties, and Photocatalytic Activity of Ultrathin ZnSe Nanorods

Chemical Synthesis, Structural Characterization, Optical Properties, and Photocatalytic Activity of Ultrathin ZnSe Nanorods

Centimeter‐Long V₂O₅ Nanowires: From Synthesis to Field‐Emission, Electrochemical, Electrical Transport, and Photoconductive Properties

Plasmonic Indium Nanoparticle‐Induced High‐Performance Photoswitch for Blue Light Detection

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High‐Performance Blue/Ultraviolet‐Light‐Sensitive ZnSe‐Nanobelt Photodetectors

Cited by 225 publications

References 40 publications

Chemical Synthesis, Structural Characterization, Optical Properties, and Photocatalytic Activity of Ultrathin ZnSe Nanorods

Chemical Synthesis, Structural Characterization, Optical Properties, and Photocatalytic Activity of Ultrathin ZnSe Nanorods

Centimeter‐Long V2O5 Nanowires: From Synthesis to Field‐Emission, Electrochemical, Electrical Transport, and Photoconductive Properties

Plasmonic Indium Nanoparticle‐Induced High‐Performance Photoswitch for Blue Light Detection

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Centimeter‐Long V₂O₅ Nanowires: From Synthesis to Field‐Emission, Electrochemical, Electrical Transport, and Photoconductive Properties